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Title: Natural Gas Measurement Using A Vortex Meter With Built-In Flow Computer And Temperature Sensor Pressure Values Read-In From An External Pressure Transmitter Via Hart Communication
Author: Rainer Hcker
Source: American Gas Association 2005
Year Published: 2005
Abstract: Mass flow measurement of natural gas today typically requires a volumetric flow meter, a temperature sensor, a pressure sensor, a flow computer, wiring for all instruments and power supplies for all instruments. Besides the relatively high total cost of this solution, there are numerous error possibilities in setting up such a measurement point. A better solution is to have a vortex flow meter with build-in temperature sensor and with build-in flow computer. The new (patent pending) issue here is to obtain the missing pressure values from an external pressure transmitter using the standard HART communication, thereby allowing the use of standard pressure transducers and recalibration routines.

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